Lighting device
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United States of America Patent
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Jun 5, 2018
Issued Date -
N/A
app pub date -
Apr 28, 2014
filing date -
May 8, 2013
priority date (Note) -
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Abstract
There is provided a lighting device (10) which is suitable for a retrofit LED lamp, and which comprises an envelope (15) surrounding an inner volume (16), of which envelope an outer surface (12a) is arranged for distributing light from a multiple of light sources (19) of the lighting device. An inner surface (12b) of the envelope is utilized for providing a low thermal resistance of the lighting device on a system level by being at least partly covered by a sheet metal element (13). Driver electronics (17) of the light sources are arranged within the inner volume.
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